The Dopamine D4 Receptor Gene and Moderation of the Association Between Externalizing Behavior and IQ
Open accessAbstract
BACKGROUND: Dopaminergic neurotransmission is implicated in externalizing behavior problems, such as aggression and hyperactivity. Externalizing behavior is known to be negatively associated with cognitive ability. Activation of dopamine D4 receptors appears to inhibit the functioning of the prefrontal cortex, a brain region implicated in cognitive ability. The 7-repeat allele of the dopamine D4 receptor gene produces less efficient receptors, relative to other alleles, and this may alter the effects of dopamine on cognitive function. OBJECTIVE: To examine the influence of a polymorphism in the third exon of the dopamine D4 receptor gene on the association between externalizing behavior and IQ. DESIGN: In 1 community sample and 2 clinical samples, the presence or absence of the 7-repeat allele was examined as a moderator of the association between externalizing behavior and IQ; the strength of this effect across samples was estimated meta-analytically. PATIENTS: Eighty-seven boys from a longitudinal community study, 48 boys referred clinically for aggression, and 42 adult males diagnosed with attention-deficit/hyperactivity disorder. MAIN OUTCOME MEASURES: IQ scores and observer ratings of externalizing behavior were taken from existing data sets. RESULTS: Among individuals lacking the 7-repeat allele, externalizing behavior was negatively correlated with IQ (mean r = -0.43; P<.001). Among individuals having at least 1 copy of the 7-repeat allele, externalizing behavior and IQ were uncorrelated (mean r = 0.02; P = .45). The difference between these correlations was significant (z = -2.99; P<.01). CONCLUSIONS: Allelic variation of the dopamine D4 receptor gene appears to be a genetic factor moderating the association between externalizing behavior and cognitive ability. This finding may help to elucidate the adaptive value of the 7-repeat allele.
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The DRD4 VNTR was not associated with externalizing behavior in a longitudinal community sample of 87 boys, within an earlier sample of 48 clinically referred aggressive boys, or in a later sample of 144 high aggression child cases and adult controls.
“The VNTR was not associated with externalizing behavior in a longitudinal community sample of 87 boys [81], within our earlier sample of 48 clinically referred aggressive boys [81], or our later sample of 144 high aggression child cases and adult controls [82].”
From Genetics of child aggression, a systematic review (2024) · cites this paper as [81]
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Self-citation
- Authors
- DeYoung, C. G., Peterson, J. B., Séguin, J. R., Mejia, J. M., Pihl, R. O., Beitchman, J. H., Jain, U., Tremblay, R. E., Kennedy, J. L., & Palmour, R. M.
- Affiliations
- Centre for Addiction and Mental Health (CA)
- University of Toronto (CA)
- Université de Montréal (CA)
- University of Alberta (CA)
- McGill University (CA)
- ORCID
- Venue
- Archives of General Psychiatry
- Publisher
- American Medical Association (AMA)
- Published
- 2006-12-01
- Volume
- 63
- Issue
- 12
- Pages
- 1410-6
- ISSN
- 0003-990X (ISSN-L)
- PMC
- PMC3283582
- OpenAlex
- W2121138114
- Cited by
- 60
- References
- 68
- Citations by year
- 2025: 1 · 2024: 2 · 2021: 1 · 2020: 3 · 2018: 1 · 2016: 1 · 2015: 2 · 2014: 7 · 2013: 5 · 2012: 3
- FWCI
- 2.78
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Archives of General Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- CLOK (University of Central Lancashire) (submittedVersion)
- Funders
- Alva Foundation
- Canadian Institutes of Health Research (44072)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Keywords
- dopamine D4 receptor gene, DRD4, 7-repeat allele, externalizing problems, IQ, cognitive ability, gene-environment moderation, aggression, hyperactivity, attention deficit hyperactivity disorder, prefrontal cortex, dopamine signaling, genetic polymorphism
- MeSH terms
- Adolescent, Adult, Aggression, Alleles, Attention Deficit Disorder with Hyperactivity, Child, Child Behavior Disorders, Child, Preschool, Genotype, Humans, Intelligence, Male, Middle Aged, Personality Inventory, Polymorphism, Genetic, Wechsler Scales, Prefrontal Cortex, Tandem Repeat Sequences, Receptors, Dopamine D4
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